1 The lac operon consists of three structural genes, and a promoter, a terminator, regulator, and an operator. 2  The three structural genes are: lacZ, lacY, and lacA.n this case, when lactose is required as a sugar source for the bacterium, the three genes of the lac operon can be expressed and their subsequent proteins translated: lacZ, lacY, and lacA.
NEC Corporation (æ¥æ¬é»æ°æ ªå¼ä¼ç¤¾, Nippon Denki Kabushiki Gaisha) is a Japanese multinational provider of information technology (IT) services and products, headquartered in Minato, Tokyo, Japan.
NEC Electronics Corporation was separated from NEC in 2002 as a new semiconductor company. NEC Laboratories America, Inc. (NEC Labs) started in November, 2002 as a merger of NEC Research Institute (NECI) and NEC USAâs Computer and Communications Research Laboratory (CCRL).n 1980, NEC created the first digital signal processor, the NEC ÂµPD7710. NEC Semiconductors (UK) Ltd. was established in 1981, producing VLSIs and LSIs. NEC introduced the 8-bit PC-8800 series personal computer in 1981, followed by the 16-bit PC-9800 series in 1982.